Originally Posted by
Silver Fang
It was because the story ends up as filler. You spent time following a plot or development that was cut off with no repercussions. So it ended up being useless.
That's why minis sell so low. Because usually the events of a mini are side stories that don't really come up in the main books, so many consider them filler. I don't, as I love a mini if it's written well and showing other aspects of a character, but different strokes.
So like Strains Generation X or Bunn's Uncanny. Both stories were effectively filler, as nothing from them has come up again. I suppose Strain did better than Bunn for curing Jubilee & Monet, so if those developments stick, her series did something. But Bunn's Uncanny on the other hand, pretty much all of that was ignored and is a story that can be stricken from continuity these days.
So yeah. The way Marvel is now, it's hard to get invested in anything because the characters or development eventually get reset to whatever is convenient. It just happens sooner than later for some.